Statistics and probability
Combination
A selection in which order does not matter.
Common notationC(n,r)=n!/[r!(n−r)!]
In one sentence
What does Combination mean?
A selection in which order does not matter.
How it is written
C(n,r)=n!/[r!(n−r)!]
A compact example
Choosing 2 members from 5 gives 10 combinations.
Other names and search terms
binomial coefficient.
Where this fits
When should you learn Combination?
The first encounter is not the final level. Many ideas begin visually, become computational in high school and become formal in college.
- 1Pre-high schoolPrepare foundations
- 2High schoolUsually introduced
- 3CollegeGreater depth
- 4AdvancedGreater depth
- Statistics
- Probability
- Fractions
- Percentages
- Sets
- Distributions
- Inference
- Quantum probability
Quantum predictions are expressed through probabilities and expected values.
Open the Zero-to-QM pathClear answers
Questions about Combination
What does Combination mean in mathematics?
A selection in which order does not matter.
How is Combination written?
A common notation is C(n,r)=n!/[r!(n−r)!].
What is an example of Combination?
Choosing 2 members from 5 gives 10 combinations.